28872140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{499}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 66528000

約数和(自身を除く): 37655860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 263, 499, 526, 998, 1052, 1315, 1996, 2495, 2630, 2893, 4990, 5260, 5489, 5786, 9980, 10978, 11572, 14465, 21956, 27445, 28930, 54890, 57860, 109780, 131237, 262474, 524948, 656185, 1312370, 1443607, 2624740, 2887214, 5774428, 7218035, 14436070, 28872140]

約数ペア:

[(1, 28872140), (2, 14436070), (4, 7218035), (5, 5774428), (10, 2887214), (11, 2624740), (20, 1443607), (22, 1312370), (44, 656185), (55, 524948), (110, 262474), (220, 131237), (263, 109780), (499, 57860), (526, 54890), (998, 28930), (1052, 27445), (1315, 21956), (1996, 14465), (2495, 11572), (2630, 10978), (2893, 9980), (4990, 5786), (5260, 5489)]